Urology — MCQs

Urology Indian Medical PG Practice Questions and MCQs

Question 151: Which of the following is an absolute indication for BPH?

A. Prostatitis
B. Voiding bladder pressures > 70 cm of water
C. Episode of hematuria
D. Bilateral hydronephrosis (Correct Answer)

Explanation: **Explanation:** In the management of Benign Prostatic Hyperplasia (BPH), indications for surgical intervention (like TURP) are divided into absolute and relative. **Bilateral hydronephrosis** (Option D) is an **absolute indication** because it signifies chronic urinary retention leading to back-pressure changes, which can result in obstructive uropathy and irreversible renal failure. **Why the other options are incorrect:** * **A. Prostatitis:** This is an inflammatory/infectious condition of the prostate. While it may coexist with BPH, it is managed medically with antibiotics and is not a surgical indication for BPH. * **B. Voiding bladder pressures > 70 cm H₂O:** High voiding pressure indicates bladder outlet obstruction, but it is a physiological finding rather than a clinical complication. Surgery is generally indicated based on clinical outcomes rather than a specific pressure cutoff alone. * **C. Episode of hematuria:** A single episode of hematuria requires investigation (to rule out malignancy). Only **recurrent or persistent gross hematuria** refractory to medical treatment (like Finasteride) is considered an absolute indication for surgery. **Clinical Pearls for NEET-PG:** The mnemonic **"Refractory WASH"** helps remember the absolute indications for BPH surgery: 1. **Refractory** Urinary Retention (failed at least one trial of catheter removal). 2. **W**ater in the Kidneys (**Hydronephrosis** or Renal Insufficiency). 3. **A**ny Bladder **Stones** (Vesical calculi). 4. **S**econdary Refractory **Hematuria**. 5. **H**igh frequency of **UTIs** (Recurrent infections). *Note: Size of the prostate is never an absolute indication for surgery; intervention is based on symptoms and complications.*

Question 152: The following structures are felt on per rectal examination, EXCEPT:

A. Bulb of penis
B. Ureter (Correct Answer)
C. Anorectal ring
D. Urogenital diaphragm

Explanation: **Explanation:** The **ureter** is the correct answer because it is a retroperitoneal structure that enters the bladder at its posterosuperior angle. Under normal physiological conditions, the ureters are not palpable during a digital rectal examination (DRE) because they are situated too superiorly and are collapsed, thin-walled tubes. They only become palpable if they are significantly dilated (megaureter) or contain a large calculus at the vesicoureteric junction. **Analysis of other options:** * **Anorectal Ring:** This is a vital functional landmark felt at the upper end of the anal canal. It is formed by the fusion of the puborectalis muscle, deep external sphincter, and internal sphincter. * **Bulb of Penis:** Located in the midline of the perineum, the bulb of the penis can be felt anteriorly through the rectal wall, especially in the lower part of the examination. * **Urogenital Diaphragm:** This musculofascial layer (containing the sphincter urethrae and deep transverse perinei) lies anterior to the rectum and can be palpated as a firm resistance anteriorly. **Clinical Pearls for NEET-PG:** * **Structures felt anteriorly (Male):** Prostate (posterior lobe), seminal vesicles (if distended), urinary bladder (if full), rectovesical pouch, and the bulb of the penis. * **Structures felt anteriorly (Female):** Vagina, cervix, and sometimes the retroverted uterus or rectouterine pouch (Pouch of Douglas). * **Structures felt posteriorly:** Sacrum, coccyx, and lymph nodes (sacral). * **Structures felt laterally:** Ischiorectal fossa, ischial spines, and internal iliac lymph nodes.

Question 153: All of the following can be seen after transurethral resection of prostate except:

A. Congestive cardiac failure
B. Transient blindness
C. Convulsions
D. Hypernatremia (Correct Answer)

Explanation: This question pertains to **TURP Syndrome**, a serious complication caused by the systemic absorption of non-conductive irrigation fluids (like Glycine 1.5% or Sorbitol) through opened prostatic venous sinuses. ### Why Hypernatremia is the Correct Answer The hallmark of TURP syndrome is **Dilutional Hyponatremia**, not hypernatremia. Large volumes of irrigation fluid enter the circulation, leading to intravascular volume expansion and a relative drop in serum sodium levels. Therefore, Hypernatremia is the "except" option. ### Explanation of Other Options * **A. Congestive Cardiac Failure:** The rapid absorption of irrigation fluid (often >2 liters) causes acute **hypervolemia**. This fluid overload can precipitate pulmonary edema and congestive cardiac failure, especially in elderly patients with limited cardiac reserve. * **B. Transient Blindness:** This is a specific side effect of **Glycine** toxicity. Glycine acts as an inhibitory neurotransmitter in the retina. High levels can cause temporary visual disturbances or total blindness, which usually resolves as the glycine is metabolized. * **C. Convulsions:** Severe hyponatremia (<120 mEq/L) leads to cerebral edema. This manifests neurologically as restlessness, confusion, seizures (convulsions), and potentially coma. ### High-Yield Clinical Pearls for NEET-PG * **Triad of TURP Syndrome:** Hyponatremia, Fluid Overload, and CNS toxicity. * **Prevention:** Limit resection time to **<60 minutes**, keep the irrigation bag height **<60 cm** above the patient, and use Bipolar TURP (which allows the use of Normal Saline, eliminating the risk of dilutional hyponatremia). * **Management:** Stop the procedure, administer diuretics (Furosemide), and in severe symptomatic hyponatremia, use **3% Hypertonic Saline** (correcting at a rate not exceeding 12 mEq/L in 24 hours to avoid Central Pontine Myelinolysis).

Question 154: A paralyzed bladder following spinal injury is best managed by:

A. Gibbon's catheter
B. Malicot catheter
C. Foley's catheter (Correct Answer)
D. Metallic catheter

Explanation: **Explanation:** In the acute phase of a spinal cord injury (spinal shock), the bladder becomes **atonic and paralyzed**, leading to urinary retention. The primary goal of management is to prevent over-distension and subsequent myogenic damage or renal failure. **Why Foley’s Catheter is the Correct Choice:** The **Foley’s catheter** is the gold standard for initial management in the acute setting. It is a flexible, indwelling balloon-tipped catheter that allows for continuous drainage, is easy to insert, and is less traumatic than rigid alternatives. It facilitates accurate monitoring of urine output, which is critical in hemodynamically unstable trauma patients. Once the patient is stable, the long-term management often transitions to Clean Intermittent Catheterization (CIC). **Analysis of Incorrect Options:** * **Gibbon’s Catheter:** This is a long, thin, flexible PVC catheter used for long-term drainage. However, it is rarely used today due to the convenience and lower irritation profile of modern silicone Foley catheters. * **Malicot Catheter:** This is a self-retaining "mushroom-tip" catheter usually inserted via a suprapubic cystostomy or used for nephrostomy drainage. It is not used for routine urethral catheterization in acute spinal injury. * **Metallic Catheter:** These are rigid and used primarily for bypassing urethral strictures by experienced urologists. They carry a high risk of urethral trauma and false passages, making them contraindicated for routine bladder paralysis management. **Clinical Pearls for NEET-PG:** * **Spinal Shock Phase:** The bladder is **atonic** (areflexic) with a competent sphincter, leading to retention. * **Post-Shock Phase:** Depending on the level of injury, the bladder may become **spastic** (Suprasacral/UMN lesion) or remain **atonic** (Sacral/LMN lesion). * **Gold Standard for Long-term Management:** Clean Intermittent Catheterization (CIC) is preferred over indwelling catheters to reduce the risk of UTIs and bladder stones.

Question 155: Who performed the first autologous renal transplantation?

A. Hardy (Correct Answer)
B. Kavosis
C. Higgins
D. Studor

Explanation: **Explanation:** The correct answer is **Hardy (Option A)**. In 1963, James D. Hardy performed the first successful **autologous renal transplantation** (autotransplantation). This procedure involves the removal of a patient’s own kidney and its subsequent reimplantation into a different site (typically the iliac fossa) within the same individual. It is primarily indicated for complex ureteral injuries, renal artery aneurysms, or extensive renovascular disease where *in situ* repair is technically impossible. **Analysis of Options:** * **Hardy (A):** Beyond autotransplantation, James Hardy is a monumental figure in transplant surgery, having also performed the first human lung transplant (1963) and the first xenogeneic heart transplant (1964). * **Kavosis (B):** Louis Kavoussi is a pioneer in **laparoscopic urology**. He is best known for performing the first laparoscopic live donor nephrectomy in 1995, revolutionizing kidney donation. * **Higgins (C):** Charles Higgins is noted for his work in urinary diversion, specifically the development of the **transureteroureterostomy (TUU)** and early techniques in cystectomy. * **Studer (D):** Urs Studer is famous for the **Studer Pouch**, an orthotopic ileal neobladder technique used for urinary reconstruction following radical cystectomy. **High-Yield Clinical Pearls for NEET-PG:** * **First Human Kidney Transplant:** Performed by **Joseph Murray** (1954) between identical twins (isograft); he received the Nobel Prize for this. * **Most common indication for Autotransplantation today:** Complex ureteral loss (e.g., following extensive surgery or trauma) and renal artery branch aneurysms. * **Site of Reimplantation:** The kidney is usually placed in the **contralateral iliac fossa** to facilitate the vascular anastomosis.

Question 156: A 30-year-old male presents with right flank pain and hematuria. A CECT abdomen reveals an 8x8 cm solid mass in the right kidney and a 3x3 cm solid mass in the upper pole of the left kidney. What is the most appropriate surgical treatment for this patient?

A. Bilateral radical nephrectomy
B. Right radical nephrectomy and biopsy of the mass from the opposite kidney
C. Right radical nephrectomy and left partial nephrectomy (Correct Answer)
D. Right radical nephrectomy and left partial nephrectomy

Explanation: ### Explanation The patient presents with **Synchronous Bilateral Renal Cell Carcinoma (RCC)**. In cases of bilateral renal masses, the primary goal of management is to achieve oncological clearance while preserving as much renal function as possible to avoid long-term dialysis. **1. Why Option C is Correct:** The standard of care for bilateral RCC is to perform a **Radical Nephrectomy (RN)** on the side with the larger/more complex tumor (Right side: 8 cm) and a **Nephron-Sparing Surgery (NSS) or Partial Nephrectomy (PN)** on the side with the smaller/more manageable tumor (Left side: 3 cm). This approach ensures the removal of the high-stage tumor while preserving functional parenchyma on the contralateral side, maintaining the patient's quality of life. **2. Why Other Options are Incorrect:** * **Option A (Bilateral Radical Nephrectomy):** This would render the patient anephric, necessitating lifelong dialysis or a renal transplant. It is reserved only for cases where NSS is technically impossible on both sides. * **Option B (RN and Biopsy):** Biopsy is unnecessary if the imaging (CECT) is characteristic of RCC. Furthermore, leaving a 3 cm solid mass untreated after biopsy is not definitive management for a suspected malignancy. * **Option D:** This is identical to Option C; however, the principle remains that the smaller lesion must be treated with nephron preservation. **Clinical Pearls for NEET-PG:** * **Partial Nephrectomy Indications:** Now considered the gold standard for T1a tumors (<4 cm) and increasingly used for T1b (4–7 cm) if technically feasible. * **Absolute Indications for NSS:** Anatomical or functional solitary kidney, bilateral RCC, or chronic renal insufficiency. * **Staging:** A mass >7 cm (like the 8 cm right mass) is classified as at least **T2**, making Radical Nephrectomy the preferred choice for that side. * **Hereditary Link:** Always consider genetic syndromes like **Von Hippel-Lindau (VHL)** in young patients with bilateral or multifocal RCC.

Question 157: Beta-naphthyl amine dyes predispose to which carcinoma?

A. Urinary bladder carcinoma (Correct Answer)
B. Renal carcinoma
C. Hepatic carcinoma
D. Lung carcinoma

Explanation: **Explanation:** **Beta-naphthylamine** is a classic aromatic amine used historically in the rubber, dye, and chemical industries. It is a potent **procarcinogen** that undergoes metabolism in the liver (via N-oxidation) and is subsequently excreted in the urine. Once in the bladder, the acidic environment and the enzyme beta-glucuronidase convert it into its active carcinogenic form, which directly damages the DNA of the urothelium. This process leads to the development of **Urinary Bladder Carcinoma**, specifically **Transitional Cell Carcinoma (TCC)**. **Analysis of Options:** * **Urinary Bladder Carcinoma (Correct):** The bladder is the primary site because the active metabolites of aromatic amines (like beta-naphthylamine and benzidine) are concentrated and stored in the urine, allowing for prolonged contact with the bladder wall. * **Renal Carcinoma:** While some chemicals affect the kidneys, Renal Cell Carcinoma (RCC) is more strongly associated with smoking, obesity, and genetic syndromes (like VHL) rather than specific dye exposure. * **Hepatic Carcinoma:** Associated primarily with Aflatoxins, Hepatitis B/C, and Vinyl chloride (angiosarcoma), not naphthylamine dyes. * **Lung Carcinoma:** Primarily linked to tobacco smoke, asbestos, radon, and arsenic. **High-Yield Clinical Pearls for NEET-PG:** * **Occupational Risk:** Workers in the dye, rubber, leather, and textile industries are at the highest risk. * **Latency Period:** There is a long lag period (often 15–40 years) between exposure and the development of bladder cancer. * **Other Risk Factors for Bladder Cancer:** Smoking (most common), *Schistosoma haematobium* (linked to Squamous Cell Carcinoma), and drugs like Cyclophosphamide (linked to TCC). * **Screening:** Periodic urine cytology is recommended for workers with high-risk occupational exposure.

Question 158: What is the first symptom of tuberculosis of the kidney?

A. Hematuria
B. Increased frequency of micturition (Correct Answer)
C. Hesitancy
D. Pain

Explanation: **Explanation:** Genitourinary tuberculosis (GUTB) is almost always secondary to a primary focus in the lungs. The **earliest and most common symptom** of renal tuberculosis is **increased frequency of micturition**, which is often painless and progressive. **Why "Increased frequency of micturition" is correct:** In the early stages, frequency occurs due to the presence of mycobacteria and inflammatory products in the urine, which irritate the bladder mucosa. Initially, this is more pronounced at night (**nocturia**). As the disease progresses, the bladder wall undergoes fibrosis and cicatrization, leading to a "thimble bladder" (reduced capacity), which further worsens the frequency. A classic finding is **sterile pyuria** (pus cells in urine with no growth on routine culture). **Why other options are incorrect:** * **Hematuria:** While common (occurring in about 50% of cases), it is usually a later sign resulting from ulceration in the renal pelvis or bladder. * **Pain:** Pain is typically a late feature. It may manifest as a dull ache in the loin or "strangury" (painful micturition) once the bladder is extensively involved. Renal colic may occur if a clot or a piece of debris obstructs the ureter. * **Hesitancy:** This is a symptom of bladder outlet obstruction (e.g., BPH) and is not a characteristic feature of renal TB. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Culture on **Lowenstein-Jensen (LJ) medium** (takes 6–8 weeks). * **Earliest Radiological Sign:** "Moth-eaten" appearance of the calyces due to cortical necrosis. * **Putty Kidney:** A late-stage finding where the kidney is completely destroyed and replaced by caseous calcified material (autonephrectomy). * **Classic Triad:** Increased frequency + Sterile pyuria + Acid-fast bacilli (AFB) in urine.

Question 159: A 56-year-old smoker with renal clear cell carcinoma has LFTs showing SGOT/PT of 65/45 and ALP of 465. Abdominal ultrasound does not reveal liver metastasis. What is the likely diagnosis?

A. Hutchinson's syndrome
B. Stauffer's syndrome (Correct Answer)
C. Goldenhar Syndrome
D. Cornelia de Lange Syndrome

Explanation: ### **Explanation** The correct answer is **Stauffer’s syndrome**. **1. Understanding the Correct Answer:** Stauffer’s syndrome is a **paraneoplastic syndrome** associated with Renal Cell Carcinoma (RCC). It is characterized by **non-metastatic hepatic dysfunction** in the absence of direct liver involvement or biliary obstruction. * **Pathophysiology:** It is believed to be caused by the systemic release of cytokines, particularly **Interleukin-6 (IL-6)**, which affects liver function. * **Clinical Presentation:** Patients typically show elevated **Alkaline Phosphatase (ALP)**, prolonged prothrombin time, and hypoalbuminemia. Transaminases (SGOT/PT) are usually only mildly elevated. * **Key Feature:** The liver function tests (LFTs) typically normalize following a radical nephrectomy (removal of the primary tumor). **2. Why Other Options are Incorrect:** * **Hutchinson's Syndrome:** Refers to orbital metastases from Neuroblastoma (typically in children), leading to proptosis and periorbital ecchymosis ("raccoon eyes"). * **Goldenhar Syndrome:** A congenital condition (Oculo-Auriculo-Vertebral dysplasia) characterized by hemifacial microsomia, ear abnormalities, and epibulbar dermoids. * **Cornelia de Lange Syndrome:** A genetic disorder characterized by intellectual disability, growth retardation, and distinctive facial features (synophrys/joined eyebrows). **3. NEET-PG High-Yield Pearls:** * **RCC Paraneoplastic Syndromes:** RCC is known as the "Internist's Tumor" because it produces many syndromes: Polycythemia (via Erythropoietin), Hypercalcemia (via PTHrP), and Hypertension (via Renin). * **Stauffer’s Variant:** A rare variant exists where cholestatic jaundice occurs; if LFTs do *not* normalize after nephrectomy, it suggests a poor prognosis or occult metastasis. * **Smoker + Hematuria/Mass + High ALP (with normal imaging):** Always think of Stauffer’s syndrome in a surgical context.

Question 160: Deciduous roots which cannot be grasped with forceps are removed by using which instrument?

A. Potts elevator
B. Miller elevator
C. Warwick James elevator (Correct Answer)
D. Apex elevator

Explanation: **Explanation:** The removal of deciduous roots that cannot be grasped by forceps requires a specialized instrument designed for delicate yet effective elevation. The **Warwick James elevator** is the correct choice because it is a set of three instruments (straight, left-curved, and right-curved) with small, thin, and rounded triangular blades. These features make it ideal for removing small root fragments or deciduous teeth where minimal force is required to avoid damaging the underlying permanent tooth bud. **Analysis of Options:** * **Warwick James Elevator (Correct):** Its fine tips allow for easy insertion into the periodontal ligament space of small roots. It is the standard instrument for elevating roots that lack enough crown structure for forceps. * **Potts Elevator:** These are heavy-duty elevators with a T-bar handle, primarily used for the removal of impacted maxillary third molars. They are too bulky for delicate deciduous roots. * **Miller Elevator:** Similar to Potts, these are large, heavy elevators used for posterior teeth (especially third molars). They provide high leverage, which is contraindicated for fragile deciduous roots. * **Apex Elevator:** Also known as an apical fragment ejector, these are used for very deep-seated root tips in adults. While they target "apices," the Warwick James is the specific preferred instrument for deciduous roots in pediatric surgery. **High-Yield Clinical Pearls for NEET-PG:** * **Coupland’s Elevator:** Used for splitting multi-rooted teeth and initial dilation of the socket. * **Cryer’s Elevator:** Works on the principle of **Wheel and Axle**; it is the most common instrument used to remove a mandibular molar root when the adjacent socket is empty. * **Rule of Force:** Always use the least amount of force when extracting deciduous teeth to prevent injury to the succedaneous (permanent) tooth germ.

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